Home / 1,116.50-1,540.77-619.22

Finding the Fourth Proportional to 1,116.50, 1,540.77 and 619.22

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Solution

The fourth proportional to 1,116.50, 1,540.77 and 619.22 is: 854.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.50 : 1,540.77 = 619.22 : x
  2. Step 2: Convert to fraction form
    1,116.50/1,540.77 = 619.22/x
  3. Step 3: Cross multiply
    1,116.50x = 1,540.77 × 619.22
  4. Step 4: Simplify right side
    1,116.50x = 954,067.90
  5. Step 5: Solve for x
    x = 954,067.90/1,116.50
  6. Step 6: Final answer
    x = 854.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.